Chọn ABCD
Tham khảo một số bài tập về câu điều kiện tại https://vndoc.com/bai-tap-ve-cau-dieu-kien-loai-1-106775
1c 2b 3c 4a 6c 7c 8c 9d 10a 11a 13a
1c - competed
2b - competed
3c - did
4a - won
5b - will come/ finishes
6c - won't go
7c - didn't finish
8c - competed
9d - kicked
10a - watched
11a - was
12c - swimmer
13a - players